diff --git a/.gitignore b/.gitignore
index 95c4f7c..f580f9b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,10 +1,11 @@
 *.pyc
 *.sw?
 *~
 .coverage
 .eggs/
 __pycache__
 *.egg-info/
 build
 dist
 version.txt
+.tox